Gas-liquid double-drive torsional impact diamond composite drilling tool

Abstract

The utility model discloses a gas-liquid double-drive torsional impact diamond composite drilling tool, which relates to the technical field of composite drilling tools and comprises an outer shell and an impact device. The impact device comprises an impact hammer body, two convex blocks, a reversing valve and an upper cover plate, the impact hammer body is installed in the outer shell, the two convex blocks are fixedly connected to the inner wall of the impact hammer body and are symmetrically arranged, the reversing valve is installed in the impact hammer body, two clamping grooves are formed in the surface of the reversing valve, and the upper cover plate is arranged in the clamping grooves. According to the gas-liquid double-drive torsional impact diamond composite drilling tool, a torsional impact tool is directly driven by drilling fluid; the torsion punching tool is provided with a cylinder; the torsion punching tool and the diamond drill bit are rigidly connected and are both provided with inclined airflow channels; the drill bit generates axial and circumferential high-frequency vibration under double impact of high-pressure and high-speed airflow and drilling fluid, and the phenomena of adhesion and slippage of the drill bit are effectively overcome, so that the stability of the drill bit is improved, the oscillation amplitude is reduced, and the service life of the drill bit is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of composite drilling tools, in particular to a gas-liquid dual-drive torsion impact diamond composite drilling tool. Background Art

[0002] In recent years, my country has intensified its exploration and development efforts in various energy zones, drilling deeper and deeper, and encountering increasingly complex formations. As the proportion of deep and ultra-deep wells continues to increase, the hardness and plasticity of deep formations have increased. Diamond drill bits are widely used to increase the mechanical penetration rate (ROP) of drill bits.

[0003] Polycrystalline diamond composite sheets are superhard materials made of artificial diamond and cemented carbide under high temperature and high pressure. They have the high hardness and high wear resistance of diamond and the high impact resistance of cemented carbide. As an efficient cutting material, artificial diamond and cemented carbide composite sheets are widely used in oil drilling, natural gas drilling, geological exploration and mechanical processing.

[0004] Generally, diamond composite drilling tools are cylindrical, and the drilling tools are provided with welding grooves whose inner contours match the outer contours of the polycrystalline diamond composite cylinder. The carbide substrate of the polycrystalline diamond composite sheet is placed in the welding groove, and the carbide substrate is welded to the welding groove and the boss. The polycrystalline diamond layer of the polycrystalline diamond composite sheet protrudes outward as a grinding layer. When the drill bit just enters the formation, the torque is insufficient, the drill bit is temporarily paused, the drill bit does not move, and the turntable is rotating. Then the torque energy is accumulated on the entire drill rod, and the rod is in a twisted state. When the torque on the drill string is suddenly released, the drill bit will instantly accelerate, and this movement will cause damage. This phenomenon is collectively referred to as a stick-slip accident in the industry, which is a general term for sticking and slipping. Once sticking and slipping occur, the drill bit stability will be reduced, high-frequency oscillation will be caused, and the drill bit life will be shortened. Utility Model Content

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a gas-liquid dual-drive torsional impact diamond composite drilling tool, which can solve the problem that when the drill bit just enters the formation, the torque is insufficient, the drill bit is temporarily paused, the drill bit is not moving, and the turntable is rotating, then the torque energy is accumulated on the entire drill rod, the rod is in a twisted state, reducing the stability of the drill bit, causing high-frequency oscillation, and shortening the life of the drill bit.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a gas-liquid dual-drive torsional impact diamond composite drill tool, comprising an external shell and an impact device; the impact device comprises an impact pit, two protrusions, a reversing valve and an upper cover plate, the impact pit is installed inside the external shell, the two protrusions are fixedly connected to the inner wall of the impact pit, the two protrusions are symmetrically arranged, the reversing valve is installed inside the impact pit, and two slots are provided on the surface of the reversing valve.

[0007] Preferably, a lower end joint is fixedly connected to the bottom of the outer shell.

[0008] Preferably, an upper end joint is fixedly mounted on the top of the outer shell, and a threaded notch is provided on the surface of the upper end joint.

[0009] Preferably, a lower cover plate is installed at the bottom of the external shell.

[0010] Preferably, the two card slots are opened in a symmetrical manner, and the two protrusions are respectively clamped inside the two card slots.

[0011] Preferably, the upper cover plate is mounted on the top of the impact vertical body, and the surface of the upper cover plate is circular and has four mounting holes equidistantly formed thereon.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. This gas-liquid dual-drive torsional impact diamond composite drill tool has a torsional impact tool that is directly driven by drilling fluid. The torsional impact tool is equipped with a cylinder. The torsional impact tool and diamond drill bit are rigidly connected, and both are equipped with inclined airflow channels. The drill bit undergoes high-frequency axial and circumferential vibrations under the dual impact of high-pressure, high-speed airflow and drilling fluid, effectively overcoming the sticking and slipping phenomena of the drill bit, thereby improving drill bit stability, reducing oscillation amplitude, and extending drill bit life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the overall structure of a gas-liquid dual-drive torsional impact diamond composite drilling tool of the present utility model;

[0016] Figure 2 This is a schematic diagram of the bottom structure of a gas-liquid dual-drive torsional impact diamond composite drilling tool of the present utility model;

[0017] Figure 3 This is a schematic diagram of the disassembled structure of a gas-liquid dual-drive torsional impact diamond composite drilling tool of the utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the impact pituitary of the utility model.

[0019] Figure numerals: 1. External shell; 2. Lower end joint; 3. Upper end joint; 4. Threaded notch; 5. Lower cover plate; 6. Impact drop body; 7. Bump; 8. Reversing valve; 9. Slot; 10. Upper cover plate; 11. Mounting hole. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of this utility model, terms such as "greater than," "less than," and "exceed" are understood to exclude the number indicated, while terms such as "above," "below," and "within" are understood to include the number indicated. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] See also Figure 1-4 The utility model provides a technical solution: a gas-liquid dual-drive torsional impact diamond composite drill, comprising an external shell 1 and an impact device, the bottom of the external shell 1 is fixedly connected to a lower end joint 2, the top of the external shell 1 is fixedly installed with an upper end joint 3, the surface of the upper end joint 3 is provided with a threaded notch 4, the bottom of the external shell 1 is installed with a lower cover plate 5, the impact device comprises an impact pit 6, two protrusions 7, a reversing valve 8 and an upper cover plate 10, the impact pit 6 is installed inside the external shell 1, the two protrusions 7 are fixedly connected to the inner wall of the impact pit 6, the two protrusions 7 are symmetrically arranged, the reversing valve 8 is installed inside the impact pit 6, the surface of the reversing valve 8 is provided with two card grooves 9, the two card grooves 9 are opened in a symmetrical manner, the two protrusions 7 are respectively clamped in the two card grooves 9, the upper cover plate 10 is installed on the top of the impact pit 6, and the surface of the upper cover plate 10 is circular and has four mounting card holes 11 equidistantly opened.

[0025] The speed that pitches down, PDC drill bit is more rapid, and it is not easy to occur, just more easily get into hole, have more concrete structure, more convenient to use, more convenient to use, do not need to worry too much, not to worry too much, not to worry too much, not to worry too much, and not to worry too much.

[0026] Working principle: The gas-liquid dual-drive torsional impact diamond composite drill tool has one end of the upper end joint 3 connected to the drill bit, and the bottom end of the impact pit 6 is in contact with the PDC drill bit. The impact pit 6 and the center of the drill bit are both inclined with air flow channels, which makes the operation more reliable and the failure rate lower during drilling. In addition, when sticking occurs suddenly during the drilling process, the drill bit suddenly stops rotating. Since the air flow channel in the center of the impact pit 6 is tilted, and the drill bit also has an air flow channel tilted accordingly, the high-pressure airflow has a great impact force on the PDC drill bit. At this time, the drill bit vibrates and displaces in both axial and circumferential directions under the impact of the high-pressure airflow and drilling fluid, causing the stuck drill bit to rotate again, overcoming the sticking, thereby improving the drill bit stability, reducing the oscillation amplitude, and extending the drill bit life.

[0027] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A gas-liquid dual-drive torsional impact diamond composite drilling tool, characterized in that: include: An outer housing (1) and an impact device; The impact device comprises an impact pit (6), two protrusions (7), a reversing valve (8) and an upper cover plate (10). The impact pit (6) is installed inside an external shell (1). The two protrusions (7) are fixedly connected to the inner wall of the impact pit (6). The two protrusions (7) are symmetrically arranged. The reversing valve (8) is installed inside the impact pit (6). Two slots (9) are provided on the surface of the reversing valve (8).

2. The gas-liquid dual-drive torsional impact diamond composite drilling tool according to claim 1, characterized in that: A lower end joint (2) is fixedly connected to the bottom of the outer shell (1).

3. The gas-liquid dual-drive torsional impact diamond composite drilling tool according to claim 1, characterized in that: An upper end joint (3) is fixedly mounted on the top of the outer shell (1), and a threaded notch (4) is provided on the surface of the upper end joint (3).

4. The gas-liquid dual-drive torsional impact diamond composite drilling tool according to claim 1, characterized in that: A lower cover plate (5) is installed at the bottom of the external shell (1).

5. The gas-liquid dual-drive torsional impact diamond composite drilling tool according to claim 1, characterized in that: The two clamping slots (9) are symmetrically opened, and the two protrusions (7) are respectively clamped inside the two clamping slots (9).

6. The gas-liquid dual-drive torsional impact diamond composite drilling tool according to claim 1, characterized in that: The upper cover plate (10) is mounted on the top of the impact vertical body (6), and the surface of the upper cover plate (10) is circular and has four mounting holes (11) equidistantly formed thereon.

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